3,34 



Agricultural Chemistry. 



Trypsin, 223. 



Tubercles on legumes, 29. 



Turnips, 194. 



Urea, 227. 

 Uric acid, 227. 

 Urine, 227. 



Vetches, 171, 205. 



Warp soils, 76. 



Water, action of on lead, 72. 

 action of on rocks, 41. 

 hard, 70. 

 mineral, 69. 

 natural, 68. 

 organic matter in, 73. 

 physical properties of, 68. 

 rain, 69. 

 soft, 71. 

 spring, 69. 

 typical good and bad, 74. 



Waxes, 98. 



Wheat, 181. 



Wheat bran, 181. 



Wheat straw, 182. 



Whey, 291. 



White ants, 43. 



Wind, action on rocks, 42. 



Wolff's feeding standards, 235. 



Wood ashes, 160. 



Wool, production, 261. 



Woolen waste, 152. 



Work, production of, 255. 



Worms, in soil formation, 42. 



Xanthin, 213. 



Yolk, of wool, 262. 



Young animals, nutrition of, 248. 



Zein, 101. 



Zinc, in plants, 109. 



